transformer installation

[kd]

Recently I observed a 45kva transformer installed in the ceiling of an office suite. Everything about this installation seemed correct except for the hard piping to the primary. I have never seen a transformer installed without the use of flex. I searched my code books and was unable to come up with any information about this being a violation. Can anyone offer some information? Thanks

kd
michigan

 

[iwire]

Re: transformer installation

While flex is a common method to supply a transformer it is not required to be done with flex.

I have used FMC, LFMC, EMT, RMC even wireway.

The worst thing about using non-flexible methods is the transmission of noise.

 

[kd]

Re: transformer installation

Thanks "iwire" for your info. I guess I was under the impression that vibration would be a concern and therefore warrant the use of flex. Perhaps that has always been for the noise factor then, instead of the possible loosening of the pipe run. Thanks again

kd
michigan